.px2rem(@name,@px){
    @{name}: @px / 75px * 1rem
}
body{
    background: #f0f0f0;
}
.header{
    width: 100%;
    .px2rem(height,300);
    position: fixed;
    left: 0;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;

    color: white;
    background: #0bb59a;
    p:nth-child(1){
        width: 10%;
        img{
            .px2rem(padding,75);
            width: 40%;
        }
    }
    p:nth-child(2){
       .px2rem(font-size,100)
    }   
}
._imgs{
    width: 100%;
    img{
        width: 100%;
        .px2rem(margin-top,30);
    }
    img:nth-child(1){
        .px2rem(margin-top,330);
    }
}
